From 72a2a8bd1becaa77371d1e644c3b9e76b757a8ed Mon Sep 17 00:00:00 2001
From: Craig Raw <craigraw@gmail.com>
Date: Fri, 31 Jul 2020 10:36:21 +0200
Subject: [PATCH] better canSign protection

---
 .../sparrowwallet/drongo/wallet/FinalizingPSBTWallet.java    | 5 +++++
 src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java    | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/sparrowwallet/drongo/wallet/FinalizingPSBTWallet.java b/src/main/java/com/sparrowwallet/drongo/wallet/FinalizingPSBTWallet.java
index 07df1f1..543bbe5 100644
--- a/src/main/java/com/sparrowwallet/drongo/wallet/FinalizingPSBTWallet.java
+++ b/src/main/java/com/sparrowwallet/drongo/wallet/FinalizingPSBTWallet.java
@@ -115,4 +115,9 @@ public class FinalizingPSBTWallet extends Wallet {
 
         return new Script(new byte[10]);
     }
+
+    @Override
+    public boolean canSign(PSBT psbt) {
+        return !getSigningNodes(psbt).isEmpty();
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java b/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
index 9e3f52b..e181280 100644
--- a/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
+++ b/src/main/java/com/sparrowwallet/drongo/wallet/Wallet.java
@@ -578,7 +578,7 @@ public class Wallet {
     }
 
     public boolean canSign(PSBT psbt) {
-        return !getSigningNodes(psbt).isEmpty();
+        return isValid() && !getSigningNodes(psbt).isEmpty();
     }
 
     /**